[automake] remove long time deprecated automake macros and variables which are removed finally in automake-1.13

Signed-off-by: Stephan Raue <stephan@openelec.tv>
fixed: system screensaver could kick in when playing video. We won't please everyone with this change but at least it brings somewhat the old behavior back without altering the registry.
[cec] physical address override was hidden on the pi. made it visible again
[CoreAudioAE] Fix CFString copy function in CCoreAudioHardware::GetOutputDeviceName

Using UTF8 encoding might fail and return NULL. Instead we pass
CFStringGetSystemEncoding().
[fix] only start service addon if there is no other instance running
[fix] stop service addon before attempting to uninstall/delete it
remove duplicate code in "CAddonDatabase::DisableAddon()"
[fix] correctly handle service addon rollback process
[osx] - hotkeycontroller - keyup and keydown were inverted
[osx] - fix volume mediakeys now control xbmc volume (fixes volume buttons on nyxboard and hw volume buttons on macs/osx)
check if hogPid was set before resetting it
Fix for audio out of sync part 2
Apply volume control at audio_mixer when possible
Send mute commands to players not using AE
Add key mapping for the power button
Add support for sleep key in Linux
Move the Nyxboard sleep key mapping to the main keymap
Use key name not id in the Nyxboard mapping for F4
[osx] - stop hammering the noidlesleep assertion - we only need to hold it once.
[AE/CA] - implement streamsilence flag (releases powermanagement assertion which is hold since lion even when holding a shared audio device open)